Richard K. Karlquist
24Patents
10h-index
11Co-inventors
72Inventor score
Filing activity: Aug 29, 1986 → Apr 4, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6651488B2 | Systems and methods of monitoring thin film deposition | Physics | 80 | Expired |
| US6668618B2 | Systems and methods of monitoring thin film deposition | Physics | 72 | Expired |
| US6831491B2 | Systems and methods for correcting phase locked loop tracking error using feed-forward phase modulation | Electricity | 71 | Expired |
| US6781534B2 | System and method for divisor threshold control in a modulation domain divider | Physics | 68 | Expired |
| US6765519B2 | System and method for designing and using analog circuits operating in the modulation domain | Physics | 65 | Expired |
| US4785415A | Digital data buffer and variable shift register | Physics | 46 | Expired |
| US5729181A | High thermal gain oven with reduced probability of temperature gradient formation for the operation of a thermally stable oscillator | Physics | 14 | Expired |
| US8933706B1 | Apparatus for measuring frequency change of an oscillator | Physics | 13 | Active |
| US6686777B1 | Phase detector having improved timing margins | Electricity | 13 | Expired |
| US7106227B2 | Method and apparatus for synchronizing a multiple-stage multiplexer | Electricity | 13 | Expired |
| US7173995B2 | Systems and methods for correcting gain error due to transition density variation in clock recovery systems | Electricity | 9 | Expired |
| US9721759B1 | System and method for distributing RF power to a plasma source | Electricity | 9 | Active |
| US5148122A | Atomic beam frequency standard having RF chain with higher frequency oscillator | Electricity | 7 | Expired |
| US5708394A | Bridge-stabilized oscillator circuit and method | Electricity | 4 | Expired |
| US6922117B2 | Lumped element transmission line frequency multiplexer | Electricity | 4 | Expired |
| US8483318B2 | Split band signal processing | Electricity | 3 | Active |
| US7176447B2 | Electro-optic delay line frequency discriminator | Physics | 2 | Expired |
| US7095989B2 | Frequency translating devices and frequency translating measurement systems with DC bias added to a mixer diode | Electricity | 2 | Expired |
| US6765435B2 | Phase locked loop demodulator and demodulation method using feed-forward tracking error compensation | Electricity | 2 | Expired |
| US7245683B2 | System and methods of recovering a clock from NRZ data | Electricity | 0 | Expired |
| US6865345B2 | Frequency translating devices and frequency translating measurement systems that utilize light-activated resistors | Electricity | 0 | Expired |
| US8718590B2 | Downconversion of comb spectrum | Electricity | 0 | Active |
| US7177380B2 | System and methods of recovering a clock from NRZ data | General | 0 | Revoked |
| US6823466B2 | Circuit and method for adjusting the clock skew in a communications system | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.